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| 水热合成温度及Na~+对二氧化锰晶型和形貌的影响 | |
| 引用本文： | 刘院英,徐亚周,魏秀格,常照荣.水热合成温度及Na~+对二氧化锰晶型和形貌的影响[J].河南师范大学学报(自然科学版),2012,40(5):103-105,109. |
| 作者姓名： | 刘院英 徐亚周 魏秀格 常照荣 |
| 作者单位： | 1. 河南师范大学化学与环境科学学院,河南新乡453007;安阳师范学院化学与化工学院,河南安阳455002 2. 河南工业职业技术学院,河南南阳,473000 3. 河南师范大学化学与环境科学学院,河南新乡,453007 |
| 基金项目： | 国家自然科学基金(21071046);河南省教育厅自然科学研究项目(2008B150009) |
| 摘 要： | 在水热条件下,以过硫酸盐和二价锰盐为反应物,用XRD和SEM技术研究了合成温度及Na+对二氧化锰晶体结构和形貌的影响规律.结果表明:反应温度低于100℃,在Na+存在下易生成γ-MnO2,形貌呈球形,结构致密,在其表面呈向外突出的丝状物.随温度升高,晶型均向β型转变,微球逐渐发生破裂. |
| 关 键 词： | 水热合成 二氧化锰 晶体结构 形貌 |
Effects of Hydrothermal Synthesis Temperature and Na~+ on the Structure and Morphology of Manganese Dioxide |
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| LIU Yuan-ying , XU Ya-zhou , WEI Xiu-ge , CHANG Zhao-rong.Effects of Hydrothermal Synthesis Temperature and Na~+ on the Structure and Morphology of Manganese Dioxide[J].Journal of Henan Normal University(Natural Science),2012,40(5):103-105,109. | |
| Authors: | LIU Yuan-ying XU Ya-zhou WEI Xiu-ge CHANG Zhao-rong |
| Institution: | 1(1.College of Chemistry and Environmental Science,Henan Normal University,Xinxiang 453007,China;2.College of Chemistry and Chemical Engineering,Anyang Normal University,Anyang 455002,China;3.Henan Polytechnic Institute,Nanyang 473000,China) |
| Abstract: | Under hydrothermal synthesis,manganese dioxide was prepared with persulfate and manganese sulfate as the starting materials through adjusting Na+.The effects of hydrothermal temperature and Na+ on the structures and morphology were investigated by XRD and SEM.The results showed that under 100 ℃,products in the presence of Na+ were compact gamma manganese dioxide microspheres featured with filament-like protrusions jutting out from the surface.As the temperature rose,their crystal structures were changed into β polymorph gradually,and the microspheres were damaged. |
| Keywords: | hydrothermal synthesis manganese dioxide crystal structure morphology |
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